15 L of mixture contains alcohol and water in the raito 1 : 4. If 3 L of water is mixed in it, the percentage of alcohol in the new mixture will beChoices:- 15 16.66 17 18.5
Question
15 L of mixture contains alcohol and water in the raito 1 : 4. If 3 L of water is mixed in it, the percentage of alcohol in the new mixture will beChoices:- 15 16.66 17 18.5
Solution
In the initial 15 L mixture, the ratio of alcohol to water is 1:4. This means that the mixture contains 1/5 alcohol and 4/5 water.
So, the initial volume of alcohol in the mixture is 1/5 * 15 L = 3 L.
The initial volume of water in the mixture is 4/5 * 15 L = 12 L.
When 3 L of water is added, the total volume of the mixture becomes 15 L + 3 L = 18 L.
The volume of alcohol remains the same at 3 L, but the volume of water increases to 12 L + 3
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